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Introduction to Database System

Introduction to Database System
A form defines

none of the listed here
both of the listed here
the width of each field
where data is placed on the screen

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Introduction to Database System
Which of the following indicates the minimum number of entities that must be involved in a relationship?

ERD
Maximum cardinality
Minimum cardinality
Greater Entity Count (GEC)

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Introduction to Database System
The functional dependency R → S means that the value of S can be determined when we are given a value of R.

False
True

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Introduction to Database System
The on-line, softcopy display a customer's charge account to respond to an inquiry is an examples of a

on demand report
forecasting report
exception report
regularly scheduled report

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Introduction to Database System
A functional dependency is a relationship between or among:

rows.
attributes.
tables.
relations.

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Introduction to Database System
Data security threats include

fraudulent manipulation of data
hardware failure
privacy invasion
all of the listed here

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